Compare software

2FAS vs OTPClient: catalog facts
2FAS	OTPClient
Free Free and open source. Some components are source-available.	Free Free and open source under the GPL-3.0 license.
Android, iOS, Browser extension	Linux, Command line
Browser extension approves codes on the phone instead of typing them Encrypted backups to your own iCloud or Google Drive account	Multiple encrypted token databases Supports TOTP, HOTP and Steam Guard codes
Mobile-first; there is no standalone desktop app Push approval needs the browser extension installed on each machine	Desktop Linux only, no mobile app Handles one-time codes only, not passwords
Downloadable app, Browser extension	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.